WO2022166372A1 - 显影盒 - Google Patents

显影盒 Download PDF

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Publication number
WO2022166372A1
WO2022166372A1 PCT/CN2021/136203 CN2021136203W WO2022166372A1 WO 2022166372 A1 WO2022166372 A1 WO 2022166372A1 CN 2021136203 W CN2021136203 W CN 2021136203W WO 2022166372 A1 WO2022166372 A1 WO 2022166372A1
Authority
WO
WIPO (PCT)
Prior art keywords
developing cartridge
driving
gear
developing
driving force
Prior art date
Application number
PCT/CN2021/136203
Other languages
English (en)
French (fr)
Inventor
唐良春
吕金波
刘洪芳
Original Assignee
珠海市源呈数码科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202120310347.1U external-priority patent/CN214504127U/zh
Priority claimed from CN202120310346.7U external-priority patent/CN214504132U/zh
Priority claimed from CN202120727785.8U external-priority patent/CN214504130U/zh
Application filed by 珠海市源呈数码科技有限公司 filed Critical 珠海市源呈数码科技有限公司
Priority to EP21924365.6A priority Critical patent/EP4286956A1/en
Priority to US18/275,415 priority patent/US20240036494A1/en
Publication of WO2022166372A1 publication Critical patent/WO2022166372A1/zh

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0806—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller
    • G03G15/0812—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller characterised by the developer regulating means, e.g. structure of doctor blade
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/18—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge, whereby the process cartridge comprises at least two image processing means in a single unit

Definitions

  • the present invention relates to the field of electrophotographic imaging, in particular to a developing cartridge detachably installed in an electrophotographic imaging apparatus.
  • Laser printers are commonly used electrophotographic imaging equipment.
  • the developing cartridge is a consumable that is detachably installed in the laser printer.
  • the toner contained in the developing cartridge is consumed.
  • the existing developing cartridge is provided with a counting device.
  • the laser printer is provided with a counted part matching the counting device.
  • the counting device and the counted part are mutually communicated. Function, the type, life and other information of the developing cartridge are recognized by the laser printer.
  • the developing cartridge also includes a driving force receiving part for receiving the driving force from the laser printer, a developing roller for conveying toner to the outside, and a toner ejection knife for adjusting the thickness of the toner layer on the surface of the developing roller.
  • the powder knife is in contact with the outer surface of the developing roller, and along the length direction of the developing cartridge, the driving force receiving part is arranged at one of the ends; At the moment of the driving force, the driving force will cause the driving force receiving part to vibrate. When the vibration is transmitted to the developing roller and the powder knife, it may cause the contact state of the developing roller and the powder knife to change, thereby affecting the imaging of the developing cartridge. quality.
  • the developing cartridge provided by the present invention includes a casing for accommodating toner, a developing roller rotatably installed in the casing, a powder discharge knife in contact with the developing roller, and a driving device located at the longitudinal end of the casing.
  • the driving force receiving part that receives the driving force from the outside of the developing cartridge and drives the developing roller to rotate; the toner ejection knife is in contact with the surface of the developing roller to adjust the thickness of the toner layer on the surface of the developing roller; when viewed along the longitudinal direction of the developing cartridge
  • the vibration transmitted to the powder discharge knife and the developing roller is reduced at the moment when the driving force receiving part receives the driving force. Possible contact state changes between them are suppressed.
  • the diameter of the developing roller is correspondingly reduced to between 12mm-19mm, preferably 16mm, and the material cost of the developing roller is reduced;
  • the distance between the center point and the center point of the driving force receiving part is enlarged to 17mm-19mm.
  • the contact position between the developing roller and the powder knife is farther from the driving force receiving part, and the vibration generated by the driving force receiving part The influence on the contact state of the developing roller and the toner blade is reduced.
  • the developing cartridge further includes a counting device drivable by the driving force receiving portion, the counting device including a driven member receiving the driving force, and a toggle member for interacting with the counted portion, wherein the driven member is connected to the toggle.
  • a counting device drivable by the driving force receiving portion, the counting device including a driven member receiving the driving force, and a toggle member for interacting with the counted portion, wherein the driven member is connected to the toggle.
  • the counting device also includes a movable member combined with the driven member.
  • the movable member drives the driven member to disengage from the driving member for driving the driven member.
  • a part of the movable member also passes through the developing cartridge. The end cover of the device is exposed, so that the end user can reset the counting device by pressing the movable part without disassembling the end cover, which improves the use experience.
  • FIG. 1 is a perspective view of a developing cartridge according to the present invention.
  • FIG. 2 is an exploded schematic view of some components in the developing cartridge according to the first embodiment of the present invention.
  • FIG 3 is a perspective view of a bracket in the developing cartridge according to the first embodiment of the present invention.
  • FIG. 4 is a side view of the bracket in the developing cartridge according to the first embodiment of the present invention.
  • FIG. 5 is a perspective view of the end cover in the developing cartridge according to the first embodiment of the present invention.
  • 6A and 6B are schematic diagrams showing the positional relationship between the driving gear and various components of the counting device when the counting device according to the first embodiment of the present invention starts counting.
  • FIG. 7A and 7B are schematic diagrams showing the positional relationship between the driving gear and various components of the counting device during the counting process of the counting device according to the first embodiment of the present invention.
  • FIGS 8A and 8B are schematic diagrams showing the positional relationship between the driving gear and various components of the counting device after the counting device according to the first embodiment of the present invention completes the counting.
  • FIG. 9 is a schematic diagram showing the relative positions among the developing roller, the powder discharge knife and the driving force receiving gear when the developing cartridge according to the first embodiment of the present invention is viewed along a direction parallel to its longitudinal direction.
  • FIG. 10 is a perspective view of the developing cartridge according to the second embodiment of the present invention.
  • FIG. 11 is a partially exploded schematic view of the developing cartridge according to the second embodiment of the present invention.
  • FIG. 12 is a perspective view of a counting gear in the developing cartridge according to the second embodiment of the present invention.
  • FIG. 13A and 13B are perspective views of the toggle member of the counting device in the developing cartridge according to the second embodiment of the present invention.
  • FIG. 14 is a perspective view of a movable member of the counting device in the developing cartridge according to the second embodiment of the present invention.
  • 15A is a perspective view of the end cover of the developing cartridge according to the second embodiment of the present invention, viewed from the outside.
  • 15B is a perspective view of the end cover of the developing cartridge according to the second embodiment of the present invention, viewed from the inside.
  • 16A is a side view of the developing cartridge when the counting device in the developing cartridge according to the second embodiment of the present invention starts counting, viewed from the side of the developing cartridge.
  • 16B is a schematic diagram showing the relative positions of the counting gear and the end cover when the counting device in the developing cartridge according to the second embodiment of the present invention starts counting.
  • 16C is a side view when the counting device in the developing cartridge according to the second embodiment of the present invention starts counting, when viewed along the vertical direction of the developing cartridge.
  • 17A is a schematic diagram of the relative positions of the counting gear, the driving member and the movable member of the counting device when the counting device in the developing cartridge according to the second embodiment of the present invention completes the counting.
  • 17B is a schematic diagram of the relative positions of the counting gear, the driving member and the movable member when the counting device in the developing cartridge according to the second embodiment of the present invention completes the counting, when viewed along the vertical direction of the developing cartridge.
  • FIG. 1 is a perspective view of a developing cartridge according to the present invention.
  • the developing cartridge 100 may be combined with an unshown drum frame, which includes a drum frame body and a photosensitive drum rotatably mounted in the drum frame body, to form a process cartridge, and either the developing cartridge 100 or the process cartridge may be detachable.
  • the method is installed in a laser printer provided with a counted section.
  • the developing cartridge 100 is installed along the y-direction and has a length extending in the x-direction and a height extending in the z-direction, which is the direction from the bottom to the top of the developing cartridge 100 when the developing cartridge 100 is normally placed , the direction parallel to the x direction is defined as the vertical direction, the direction parallel to the y direction is the horizontal direction, and the direction parallel to the z direction is the vertical direction.
  • the developing cartridge 100 includes a housing 10 for accommodating toner, a developing roller 11 rotatably installed in the housing 10, a powder ejecting knife 14 and a powder feeding roller 15 (as shown in FIG. 11 ) in contact with the developing roller 11,
  • the powder knife 14 is in contact with the outer surface of the developing roller 11 and is used to adjust the thickness of the toner layer on the outer surface of the developing roller 11 .
  • the driving force required for the operation of the counting device 30 is supplied by the driving device 20, that is, after the driving device 20 receives the driving force from external components such as the laser printer, the developing roller 11, the powder feeding roller 15 and the The counting devices 30 are all driven and operated.
  • FIG. 2 is an exploded schematic view of some components in the developing cartridge according to the first embodiment of the present invention
  • FIG. 3 is a perspective view of the support in the developing cartridge according to the first embodiment of the present invention
  • FIG. 4 is the support in the developing cartridge according to the first embodiment of the present invention
  • 5 is a perspective view of the end cover in the developing cartridge involved in the first embodiment of the present invention.
  • the driving device 20 includes a driving force receiving part 21, a developing roller gear 22, a powder feeding roller gear 23 and an intermediate gear 24.
  • the developing roller gear 22 and the powder feeding roller gear 23 are located at the ends of the developing roller 11 and the powder feeding roller 15, respectively.
  • the receiving portion 21 meshes with the developing roller gear 22, the powder feeding roller gear 23 and the intermediate gear 24 at the same time, so when the driving force receiving portion 21 receives the driving force, the driving force receiving portion 21 rotates around the rotation axis L01, and the developing roller gear 22 , The powder feeding roller gear 23 and the intermediate gear 24 start to rotate.
  • the developing roller 11 and the powder feeding roller are driven by the developing roller gear 22 and the powder feeding roller gear 23 respectively, and the counting device 30 is driven by the intermediate gear 24 .
  • the bracket 13 is used to support the driving force receiving part 21 , the developing roller 11 and the powder feeding roller.
  • the main body 131 of the bracket 13 is provided with a supporting column 132 and a plurality of through holes, and the driving force receiving part 21 is supported by the supporting column 132 .
  • Both the roller shaft of the roller 11 and the roller shaft of the powder feeding roller pass through the through holes, so that the developing roller 11 and the powder feeding roller are supported, and then the developing roller gear 22 and the powder feeding roller gear 23 are respectively mounted to the roller shaft and the powder feeding roller of the developing roller.
  • the support column 132 and the through holes for supporting the developing roller and the powder feeding roller can also be arranged separately, that is, the bracket 13 is decomposed into two parts for supporting the developing roller, Components of the powder feed roller shaft and the driving force receiving portion 21 .
  • the bracket 13 is further provided with a forced pushing portion 133 for receiving a pushing force, and the forced pushing portion 133 is integrally formed with the body 131 , so that the strength of the forced pushing portion 133 is guaranteed.
  • the forced pushing portion 133 is used to receive a forced pushing force, so that the developing roller 11 is kept in contact with the photosensitive drum outside the developing cartridge. At this time, the forced pushing portion 133 no longer extends outward from the casing 10 .
  • Form, in terms of volume the bracket 13 is much smaller than the housing 10. During the transportation of the housing 10, the bracket 13 with a smaller volume is easier to protect, even if there are bumps, the forced push portion 133 is located in the bracket 13 is also less prone to breakage than on housing 10 .
  • the bracket 13 is located between the housing 10 and the end cover 12. When the bracket 13 is installed, the bracket 13 can be viewed as extending outward from the housing 10 as a whole.
  • the protrusions on the bracket 13 that do not need to be provided can receive the forcing force, thereby further ensuring the overall strength of the bracket 13 , and at the same time, the forced pushing portion 133 integrally formed with the body 131 will not be easily broken.
  • the driving force receiving portion 21 is rotatably supported by a supporting column 132.
  • the supporting column 132 is a cylindrical body protruding from the body 131.
  • the outer surface of the supporting column 132 includes a plurality of concave portions 132a and a plurality of convex portions arranged adjacently. As shown in FIG. 4 , when viewed along the direction of the rotation axis L01, the outermost sides of the plurality of convex portions 132b are located on the same circumferential surface.
  • the support column 132 receives the driving force. The contact area of the parts 21 is reduced, and the frictional force between the two is reduced.
  • the counting device 30 includes a driving gear 31 and a toggle member 32.
  • the driving gear 31 meshes with the intermediate gear 24. Driven by the intermediate gear 24, the driving gear 31 rotates around the rotation axis L02, and the toggle member 32 Rotating around a rotation axis L03 different from the rotation axis L02, that is, the drive gear 31 and the toggle 32 are eccentrically arranged. 2 and 5, the driving gear 31 is installed on the housing 10, the toggle member 32 is installed on the end cover 12, and the overall structure of the counting device 30 is simplified.
  • the driving gear 31 includes a gear body 311 and a toggle protrusion 312 arranged on the gear body 311, the gear body 311 is used for receiving the driving force of the intermediate gear 24, and the toggle protrusion 312 is arranged in an arc shape for forcing the toggle
  • the moving member 32 rotates, so that the toggle member 32 toggles the counted part in the laser printer.
  • the arc angle and number of the toggle protrusions 312 may be different.
  • the combination and disengagement process of a toggle protrusion 312 and the toggle member 32 is illustrated as an example.
  • the toggle protrusion 312 has a front end portion 312a, a rear end portion 312b and a middle portion between them. Section 312c.
  • the gear body 311 is provided with a tooth portion and a missing tooth portion on the circumferential surface.
  • the toggle protrusion 312 is arranged concentrically with the gear body 311 and extends along the circumferential direction of the gear body 311.
  • the tooth portion of the gear body 311 is opposite to the intermediate gear 24.
  • the driving gear 31 can be driven to rotate by the intermediate gear 24.
  • the missing tooth portion is opposite to the intermediate gear 24, the driving gear 31 cannot be driven by the intermediate gear 24.
  • the driving gear 31 stops rotating.
  • the toggle member 32 also stopped working.
  • the toggle member 32 includes a rotating portion 321, a rod portion 322 extending from the rotating portion 321, a toggle portion 324 and a force-receiving portion 323 disposed on the rod portion 322.
  • the rotating portion 321 is eccentric relative to the driving gear 31 and receives force.
  • the portion 323 is toggled by the toggle protrusion 312, and the toggle portion 324 toggles the counted portion.
  • the end cover 12 is provided with a through hole 121 , a positioning portion 122 arranged in the center of the through hole 121 , and a clamping portion 123 eccentric to the positioning portion 122 .
  • the through hole 121 is exposed, and the positioning portion 122 positions the driving gear 31 .
  • FIGS. 7A and 7B are the counting process of the counting device according to the first embodiment of the present invention.
  • 8A and 8B are schematic diagrams of the positional relationship between the driving gear and each component of the counting device after the counting of the counting device involved in Embodiment 1 of the present invention is completed.
  • the tooth portion of the gear body 311 meshes with the intermediate gear 24, the force receiving portion 323 is located adjacent to the front end portion 312a, and as the intermediate gear 24 rotates in the direction d1, the driving gear 31 starts Rotating in the direction of d2, the toggle protrusion 312 rotates with the gear body 311, so that the force receiving portion 323 is kept in the middle portion 312c, at this time, the toggle member 32 remains stationary, and the toggle portion 324 can continue to be in contact with the counted portion;
  • the toggle protrusion 312 rotates with the gear body 311 until the rear end portion 312b contacts the force receiving portion 323, the toggle protrusion 312 is about to disengage from the force receiving portion 323, but the toggle member 32 remains stationary at this time; As the gear body 31 continues to rotate, the toggle protrusion 312 is disengaged from the toggle member 32.
  • the toggle member 32 rotates in the opposite direction to the direction indicated by d2. , so that the toggle part 324 is out of contact with the counted part, and at the same time, the tooth missing part of the gear body 311 is opposite to the intermediate gear 24. Although the intermediate gear 24 continues to rotate, the gear body 311 no longer receives the driving force, and the driving gear 31 and the The toggle members 32 are all kept in a static state, and the counting device 30 completes the counting.
  • the driving gear 31 in the counting device 30 is eccentrically arranged relative to the toggle member 32 , the driving gear 31 can keep the toggle member 32 stationary during the rotation process, and the toggle member 32 can be set to be set according to the counting requirement of the counting device 30 .
  • the parameters such as the duration and the number of times that remain stationary, the arc surface provided on the driving gear 31 is combined with the force-receiving part 323 provided on the toggle member 32, which can reduce the precision requirement of the contact between the driving gear 31 and the toggle member 32.
  • the driving gear 31 and the toggle member 32 are installed on the housing 10 and the end cover 12, respectively, so that the structure of the counting device 30 can be simplified and the assembly difficulty thereof can also be reduced.
  • FIG. 9 is a schematic diagram showing the relative positions among the developing roller, the powder discharge knife and the driving force receiving gear when the developing cartridge according to the first embodiment of the present invention is viewed along a direction parallel to its longitudinal direction.
  • the powder discharge knife 14 includes a knife holder 141 and a blade 142 combined with each other, wherein the knife holder 141 is fixedly installed on the casing 10 , and the blade is in contact with the outer surface of the developing roller 11 ;
  • the driving device 20 includes The driving force input member 21 , the developing roller gear 22 , the powder feeding roller gear 23 and at least one intermediate gear 24 , the driving force input member 21 includes a driving force receiving portion 211 and a first driving gear 212 and a first driving force receiving portion 211 combined with the driving force receiving portion 211 .
  • Two driving gears 213, the diameters of the driving force receiving part 211, the first driving gear 212 and the second driving gear 213 increase in turn, the driving force receiving part 211 receives the driving force from the outside, the first driving gear 212 and the powder feeding roller
  • the gear 23 is engaged, and the second driving gear 213 is engaged with the developing roller gear 22.
  • the driving force input member 21 receives the driving force
  • the developing roller gear 22, the powder feeding roller gear 23 and at least one intermediate gear 24 are all driven. Therefore, The developing roller 11 and the powder feeding roller 15 start to rotate.
  • the knife holder 141 of the powder knife includes a first part 141a and a second part 141b that are bent relative to each other.
  • a bent part 141c with an included angle of 90° is formed between the first part 141a and the second part 141b, and the blade 142 is fixed On the second part 141 b , when the powder knife 14 is fixed on the casing 10 , the first part 141 a and the second part 141 b are mutually limited to ensure that the powder knife 14 is stably installed on the casing 10 .
  • the driving force input member 21 is combined with the casing 10 through the bracket 13 , and the driving force is transmitted between the first driving gear 212 and the powder feeding roller gear 23 in the process of receiving the driving force from the outside by the driving force receiving portion 211 . And in the process of transmitting the driving force between the second driving gear 213 and the developing roller gear 22, vibration will be generated between the two mutually combined components, especially when the driving force receiving part 211 receives the driving force, the whole driving The force input member 21 will generate a large vibration. When the vibration is transmitted to the powder knife 14 and the developing roller 11 through the casing 10 , the contact state between the powder knife 14 and the developing roller 11 may be changed.
  • the vibration transmitted to the powder discharge knife 14 and the developing roller 11 is reduced, or, at least, the driving force receiving portion 211 is not connected to the bent portion 141c and the blade 142 at least One of them overlaps, so that even if vibration is transmitted to the powder discharge knife 14, the vibration can only affect the first part 141a of the knife holder, and will not affect the second part 141b of the knife holder and the second part 141b of the knife holder blade 142.
  • the contact portion of the powder discharge knife 14 with the developing roller 11 is located in front of the driving force receiving portion, or in other words, the developing roller 11 and the blade 142 are both located on the driving force receiving portion 211.
  • both the developing roller 11 and the blade 142 are located outside the circumferential range of the driving force receiving portion 211, and along the vertical direction z, the first portion 141a of the blade holder is located above the driving force receiving portion 211, in the opposite direction of reducing the vibration
  • the outer diameter of the developing roller 11 can be reduced under the condition that the size of the developing cartridge 100 along the installation direction is determined, and the material cost of the developing roller 11 can be reduced.
  • the outer diameter d of the developing roller 11 can be selected in the range of 12mm-19mm, preferably 16mm.
  • the first driving gear 212 does not overlap with at least one of the bent portion 141c, the second portion 141b of the blade holder, and the blade 142, and thus, the first driving gear 212 The influence on the blade 142 of the vibration generated when the driving force is transmitted to and from the powder feed roller gear 23 is reduced.
  • FIG. 10 is a perspective view of a developing cartridge according to Embodiment 2 of the present invention
  • FIG. 11 is an exploded schematic view of some components of the developing cartridge according to Embodiment 2 of the present invention.
  • the same components in this embodiment and the above-mentioned embodiments will be given the same numbers.
  • a part of the driving device 20 and/or a part of the counting device 30 are covered by the end cover 12 , the driving force input member 21 for receiving the driving force in the driving device 20 is exposed from the end cover 12 , and the counting device 30 At least a part of it is also exposed from the end cover 12. Specifically, along the y direction, the part of the counting device 30 for receiving the restoring force is exposed from the rear end of the end cover 12, so that the operator can reset the counting device 30, or when developing During installation or removal of the cartridge 100, components within the drum stand or laser printer force the counter device 30 to reset.
  • the counting device 30 includes a counting gear 31 , a toggle member 32 , a movable member 33 and a first reset member 34 .
  • the counting gear 31 meshes with the driving gear 24 .
  • the driving gear 24 starts to rotate, the counting gear 31 is driven.
  • the driving force of the counting gear 31 can also be generated by the friction between the rubber layer provided on the outer surface of the driving gear 24 and the counting gear 31, or both the driving gear 24 and the counting gear 31 are replaced with rubber wheels.
  • the driving gear 24 can be regarded as one of the driving members for driving the counting gear 31 to rotate, and the counting gear 31 can be regarded as one of the driven members; the toggle member 32 and the counting gear 31 are formed separately, and the two are arranged eccentrically , along with the rotation of the counting gear 31, the toggle member 32 is toggled by the counting gear 31 at intervals, when the toggle member 32 is toggled, the toggle member 32 interacts with the counted part in the laser printer to complete the laser printer pairing Identification of the developing cartridge 100; a part of the movable member 33 is arranged coaxially with the counting gear 31.
  • the movable member 33 Under the urging force of the first reset member 34, the movable member 33 has a tendency to move away from the driving member 24, or in other words, the movable member 33 has a tendency to move away from the driving member 24. The tendency of the driving member 24 to be disengaged.
  • the counting gear 31 is disengaged from the driving member 24 under the drive of the movable member 33.
  • the movable member 33 When the counting device 30 needs to be reset, the movable member 33 is overcome by applying a force to the first reset member 34. Pushing force, the counting gear 31 is driven by the movable member 33 to return to the position combined with the driving member 24. In other words, the counting gear 31 in the present invention can be driven by the movable member 33 to the position combined with the driving member 24. and move between the positions where it is disengaged from the driving member 24 .
  • the first reset member 34 can use an elastic member or a magnetic member to generate a forcing force.
  • the first reset member 34 is a torsion spring, one end of the torsion spring is in contact with the housing 10, and the other end is in contact with the movable member. 33 abuts; as shown in FIG. 11 , in order to ensure that the toggle member 32 can stably receive the toggle force from the counting gear 31 , the counting device 30 further includes a second reset member 35 combined with the toggle member 32 .
  • the second reset member 35 is used to force the toggle member 32 to return to the position where it can receive the toggle force applied by the counting gear 31.
  • the second reset member 35 can also be an elastic member or a magnetic member, etc.
  • the second reset member 35 is a tension spring, one end of the tension spring is combined with the toggle member 32 and the other end is combined with the end cover 12 .
  • FIG. 12 is a perspective view of a counting gear in a developing cartridge according to Embodiment 2 of the present invention
  • FIGS. 13A and 13B are perspective views of a toggle member of a counting device in a developing cartridge according to Embodiment 2 of the present invention
  • FIG. 14 is an embodiment of the present invention
  • Figure 15A is a perspective view of the end cover of the developing cartridge according to the second embodiment of the present invention, viewed from the outside
  • Figure 15B is the end cover of the developing cartridge according to the second embodiment of the present invention, viewed from the inside Stereoscopic view of observation.
  • the counting gear 31 is rotatable around the rotation axis L1, and includes teeth 312 arranged on the outer circumference, at least one toggle protrusion 313 arranged on one surface 311, and an unlocking member 314 that can rotate with the counting gear.
  • the teeth 312 and the driving member 24 is combined to receive the driving force, the toggle protrusions 313 are arranged along the circumferential direction of the counting gear 31, and the number and shape of the toggle protrusions 313 can be determined according to the amount of information of the developing cartridge that the laser printer needs to recognize.
  • the number of toggle protrusions 313 determines the life information of the developing cartridge.
  • the laser printer can also determine information such as the model of the developing cartridge according to the length of the toggle protrusions 313 in the circumferential direction of the counting gear 31.
  • the unlocking member 314 is used to release the locking of the movable member 33, which will be described in detail below.
  • the counting gear 31 further includes a coupling portion 315 disposed therein, and the coupling portion 315 is used for coupling with a part of the movable member 33 , so that after the counting device 30 completes the counting, the counting gear 31 can follow the movable member. 33 moves while moving.
  • the joint portion 315 is a shaft hole coaxially disposed with the rotation axis L1 and protruding from the surface 311 .
  • the movable member 33 is provided with a protrusion 332 (as shown in FIG.
  • the protruding post 332 is provided on the counting gear 31, and the shaft hole is provided on the movable member 33; deformable, the shaft hole or protruding post 332 may not be coaxial with the rotation axis L1, but on the counting gear 31
  • the upper surface is arranged parallel to the rotation axis L1 or arranged relatively obliquely, as long as the counting gear 31 can move with the movement of the movable member 33 .
  • the toggle member 32 and the counting gear 31 are eccentrically arranged.
  • the toggle protrusion 313 toggles the toggle member 32 to rotate, thereby making the toggle member 32 interact with the counted portion;
  • the toggle member 32 and the counting gear 31 are arranged concentrically.
  • the toggle member 32 in the present invention is not only provided separately from the counting gear 31, but also relatively eccentric. It is only necessary to change the relative position of the toggle member 32 and the counting gear 31 without redesigning the counting gear 31, which is beneficial to reduce the production cost of the developer cartridge manufacturer.
  • the toggle member 32 includes a base portion 321 rotatable around the rotation axis L2, a middle portion 322 protruding outward from the base portion 321, a toggle block 323 and a force-bearing portion 324 disposed on the middle portion 322.
  • the toggle protrusion 313 on the counting gear 31 abuts.
  • the toggle protrusion 313 pushes the force receiving portion 324 to cause the toggle member 32 to rotate around the rotation axis L2.
  • the toggle block 323 and the counted along the rotation axis L2, the toggle block 323 and the force-receiving portion 324 are located on both sides of the middle portion 322, respectively.
  • the interaction between the toggle block 323 and the counted portion and The interaction between the force receiving portion 324 and the toggle protrusion 313 may not be affected, and the complexity of the developing cartridge may be reduced.
  • the movable member 33 includes a main body 331 and a rotating part 333 and a combined part (projecting column) 332 arranged on the main body 331.
  • the movable member 33 can rotate around the rotation axis L3 through the rotating part 333.
  • the protruding column 332 and the counting gear 31 are coaxially arranged, that is, the rotation axis L1 passes through the protruding column 332.
  • the axes L3 are parallel to each other, and the movable member 33 moves in a plane perpendicular to the rotation axis L1. As shown in FIG.
  • the movable member 33 further includes a positioning portion 334 , a locked portion 336 and a forced pushing portion 337 provided on the main body 331 .
  • the positioning portion 334 , the locked portion 336 and the forced pushing portion 337 are all It is integrally formed with the main body 331 , one end of the first reset member 34 is received by the positioning portion 334 , and the locked portion 336 is used to combine with an external locking member to prevent the movable member 33 from being pushed by the first reset member 34 around the rotation axis L3 Rotate, so that the protruding column 332 and the combination part 315 of the counting gear 31 remain relatively static, at this time, the counting gear 31 and the driving member 24 are kept in combination; when the counting device 30 needs to be reset, the forced pushing part 337 receives the force from the outside, Overcoming the urging force exerted by the first reset member 34 on the movable member 33 , the movable member 33 rotates around the rotation axis L3 , and then drives the
  • the locked portion 336 and the forced pushing portion 337 are formed separately from the main body 331. At this time, the locked portion 336 and the main body 331 and the forced pushing portion 337 and the main body 331 are connected by connecting components. , and when the locked portion 336 is locked by an external locking member, the main body 331 is also locked, and when an external force is applied to the forced pushing portion 337, the main body 331 can also rotate around the rotation axis L3.
  • the end cap 12 includes an end cap body 120, a first through hole 12a, a second through hole 12b and a third through hole 12c provided on the end cap body 120, and the first through hole 12a generally opens along the y direction, And facing the rear end of the developing cartridge installation direction, its specific shape is not limited, that is, the first through hole 12a can be a circle or a polygon shape, the second through hole 12b and the third through hole 12c extend along the x direction, the counting device 30 is exposed through the second through hole 12b, and the driving force receiving portion 211 is exposed through the third through hole 12c; as shown in FIGS. 15A and 15B , the end cap 12 further includes a cover 12d disposed opposite to the second through hole 12b and a slave cover 12d.
  • the counting gear 31 is opposite to the positioning column 122, but the positioning part 127 does not restrict the movement of the counting gear 31, and the movable part 33 is blocked.
  • the positioning column 127 is supported and positioned, the toggle member 32 is supported and positioned by the positioning column 129 , and one end of the second reset member 35 is connected to the positioning column 128 .
  • the end cover 12 further includes a locking member 126 disposed adjacent to the second through hole 12b, that is to say, the locking member 126 in the present invention is disposed on the end cover 12, of course, the locking member 126 can also be disposed on On the housing 10, the following description will be given by taking the locking member 126 disposed on the end cover 12 as an example.
  • the locking piece 126 is formed as a part of the end cover body 120, and the locking piece 126 can be deformed relative to the end cover body 120.
  • the side of the locking piece 126 facing the housing 10 is provided with an unlocking protrusion 1261 and
  • the limiting block 1262 has a locking portion 1263 formed between the locking protrusion 1261 and the limiting block 1262.
  • the locking portion 1263 is formed as a locking groove. When the locked portion 336 enters the locking groove 1263, the movable member 33 is locked. It cannot be forced to move by the first reset member 34 .
  • FIG. 16A is a side view of the counting device in the developing cartridge according to the second embodiment of the present invention, viewed from the side of the developing cartridge, when the counting device starts counting; Schematic diagram of the relative position of the counting gear and the end cover; FIG. 16C is a side view of the counting device in the developing cartridge according to the second embodiment of the present invention when starting to count, viewed along the vertical direction of the developing cartridge.
  • the developing cartridge 100 further includes a limiter plate 10b disposed on the longitudinal end face 10a of the casing 10 .
  • the limiter plate 10b is used to limit the movement range of the counting gear 31 .
  • the unlocking piece 314 is formed protruding from the counting gear surface 311, along the rotation direction r2 of the counting gear 31, the unlocking piece 314 has a front end 314a and a rear end 314b, and the rear end 314b is more relative to the surface than the front end 314a 311 protrudes further, thus forming a slope 314c between the front end 314a and the rear end 314b.
  • the end cap 12 is hidden in FIG. 16A in order to more clearly show the state of the various components of the counting device 30 .
  • the counting gear 31 when the developing cartridge 100 is mounted to the laser printer along with the drum frame, the counting gear 31 may be in a combined state with the driving member 24, or the two may be in a disjointed state separated from each other.
  • the driving members 24 are in a disjointed state that is separated from each other, the forced pushing portion 337 can receive the force exerted by the operator or the drum frame or components of the laser printer (such as the laser printer door cover, inner wall, etc.)
  • the movable member 33 drives the counting gear 31 to move, so that the counting gear 31 reaches the position where it is combined with the driving member 24. At this time, as shown in FIG.
  • the rear end 314b of the unlocking member 314 abuts against the unlocking protrusion 1261, and the counting gear 31 may The reverse rotation is stopped, and the locked portion 336 enters the locking groove 1263. Even if the first reset member 34 exerts a pushing force on the movable member 33, the movable member 33 will not move, and correspondingly, the counting gear 31 will not move. will move.
  • the driving force input member 21 After receiving the driving force, the driving force input member 21 starts to rotate in the direction shown by r1 (FIG. 16A), the driving force is transmitted to the counting gear 31 through the driving member 24, and the counting gear 31 starts to rotate around the rotation axis L1 along the direction shown by r2.
  • the toggle protrusion 313 toggles the force-receiving portion 324, the toggle member 32 starts to rotate around the rotation axis L2 in the direction indicated by r3.
  • the reset member 35 is deformed, and the toggle block 323 interacts with the counted portion in the laser printer until the toggle protrusion 313 is disengaged from the force-receiving portion 324, and then under the action of the reset force of the second reset member 35, the toggle 32 is rotated around the rotation axis L2 in a direction opposite to the direction indicated by r3, so that the force receiving portion 324 is combined with the next toggle protrusion 313, and the above process is repeated.
  • FIG. 17A is a schematic diagram showing the relative positions of the counting gear, the driving part and the movable part of the counting device in the counting device in the developing cartridge according to the second embodiment of the present invention when the counting is completed;
  • FIG. 17B is the counting device in the developing cartridge according to the second embodiment of the present invention.
  • the front end 314a of the unlocking member reaches a position adjacent to the unlocking protrusion 1261, the unlocking protrusion 1261 has a slope corresponding to the slope 314c, and the slope 314c gradually abuts against the slope of the unlocking protrusion 1261 Then, as the counting gear 31 continues to rotate, the unlocking member 314 deforms the locking member 126 by forcing the unlocking protrusion 1261. Specifically, the locking member 126 is deformed in a direction away from the housing 10, and the locked portion 336 is removed from the locking groove.
  • the counting gear 31 is driven by the movable member 33 Rotate together around the rotation axis L3 in the direction indicated by r4, as shown in FIG. 17B, the counting gear 31 is disengaged from the driving member 24, and a gap a is formed between the two, and the driving force of the driving member 24 cannot be transmitted to the counting gear. 31.
  • the counting gear 31 remains stationary, and the forced pushing portion 337 moves to the outside of the first through hole 12a, or the forced pushing portion 337 is exposed through the first through hole 12a.
  • the forced pushing portion 337 is forced to be pushed by the operator or the components in the drum stand or laser printer to overcome the first reset member 34
  • the forcing force on the movable member 33 causes the movable member 33 to rotate around the rotation axis L3 in the opposite direction to the direction indicated by r4.
  • the counting gear 31 is driven by the movable member 33. Rotating around the rotation axis L3 in a direction opposite to the direction shown by r4, as shown in FIG.
  • the counting device 30 When the counting device 30 according to the present invention needs to be reset, it is not necessary to disassemble the end cover 12, and it is only necessary that the operator or the components in the drum frame or the laser printer apply force to the forced pushing portion 337 of the movable member 33 to overcome the first A urging force of the reset member 34 can force the movable member 33 to drive the counting gear 31 to rotate toward the driving member 24, and the operation method is quicker.

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Abstract

一种显影盒（100），包括容纳碳粉的壳体（10）、可旋转地安装在壳体（10）中的显影辊（11）、与显影辊（11）接触的出粉刀（14）以及位于壳体（10）纵向末端的驱动装置（20）。驱动装置（20）包括用于从显影盒（100）外部接收驱动力的驱动力接收部（211），并驱动显影辊（11）转动；出粉刀（14）与显影辊（11）表面接触，用于调节显影辊（11）表面的碳粉层厚度；当沿着显影盒（100）的纵向方向观察时，至少驱动力接收部（211）不与出粉刀（14）重叠，在驱动力接收部（211）接收到驱动力的一瞬间，被传递至出粉刀（14）和显影辊（11）的振动减小，出粉刀（14）和显影辊（11）之间可能的接触状态变化被抑制。

Description

显影盒 技术领域
本发明涉及电子照相成像领域，尤其涉及一种可拆卸地安装在电子照相成像设备中的显影盒。
背景技术
激光打印机是常用的电子照相成像设备，显影盒是一种可拆卸地安装在激光打印机中的消耗品，激光打印机工作时，显影盒中容纳的碳粉被消耗，为使得用户能够及时得到更换显影盒的通知，现有显影盒中设置有计数装置，相应的，激光打印机中设置有与计数装置匹配的被计数部，当显影盒被安装至激光打印机时，通过计数装置与被计数部的相互作用，显影盒的型号、寿命等信息被激光打印机识别出来。
同时，显影盒还包括用于从激光打印机中接收驱动力的驱动力接收部、用于向外部输送碳粉的显影辊以及用于调节显影辊表面碳粉层厚度的出粉刀，所述出粉刀与显影辊外表面接触，沿显影盒的长度方向，驱动力接收部设置在其中一个末端，出粉刀和显影辊沿所述长度方向布置，在驱动力接收部从激光打印机中接收到驱动力的一瞬间，该驱动力会导致驱动力接收部产生振动，当振动传递至显影辊和出粉刀时，可能导致显影辊与出粉刀的接触状态发生变化，进而影响显影盒的成像质量。
发明内容
本发明提供的显影盒包括容纳碳粉的壳体、可旋转地安装在壳体中的显影辊、与显影辊接触的出粉刀以及位于壳体纵向末端的驱动装置，所述驱动装置包括用于从显影盒外部接收驱动力的驱动力接收部，并驱动显影辊转动；出粉刀与显影辊表面接触，用于调节显影辊表面的碳粉层厚度；当沿着显影盒的纵向方向观察时，至少驱动力接收部不与出粉刀重叠，在驱动力接收部接收到驱动力的一瞬间，被传递至出粉刀和显影辊的振动减小，所述出粉刀和显影辊之间可能的接触状态变化被抑制。
此时，显影辊的直径被相应的缩小至12mm-19mm之间，优选为16mm，显影辊的用料成本得以降低；或者，当沿着驱动力接收部的旋转轴线观察时，显影辊的旋转中心点与驱动力接收部的中心点之间的距离被放大至17mm-19mm之间，相应的，显影辊与出粉刀的接触位置离 驱动力接收部更远，驱动力接收部产生的振动对显影辊和出粉刀的接触状态影响被减小。
所述显影盒还包括可被驱动力接收部驱动的计数装置，该计数装置包括接收驱动力的被驱动件以及用于与被计数部相互作用的拨动件，其中，被驱动件与拨动件偏心设计，这样，被驱动件与拨动件之间接触的精度要求可被降低，且拨动件与被驱动件分体形成，人们可通过变换拨动件的位置或拨动件的结构使得该计数装置能够在多种型号的激光打印机中适用。
进一步的，计数装置还包括与被驱动件结合的活动件，当计数完成时，活动件带动被驱动件与用于驱动被驱动件的驱动件脱离结合，同时，活动件的一部分还通过显影盒的端盖暴露，这样，终端用户可不用拆开端盖通过按压活动件即可对计数装置进行复位操作，提升使用体验。
附图说明
图1是本发明涉及的显影盒的立体图。
图2是本发明实施例一涉及的显影盒中部分部件的分解示意图。
图3是本发明实施例一涉及的显影盒中支架的立体图。
图4是本发明实施例一涉及的显影盒中支架的侧视图。
图5是本发明实施例一涉及的显影盒中端盖的立体图。
图6A和图6B是本发明实施例一涉及的计数装置开始计数时，驱动齿轮和计数装置各部件之间的位置关系示意图。
图7A和图7B是本发明实施例一涉及的计数装置计数过程中，驱动齿轮和计数装置各部件之间的位置关系示意图。
图8A和图8B是本发明实施例一涉及的计数装置计数完成后，驱动齿轮和计数装置各部件之间的位置关系示意图。
图9是本发明实施例一涉及的显影盒沿与其纵向方向平行的方向观察时，显影辊、出粉刀和驱动力接收齿轮之间的相对位置示意图。
图10是本发明实施例二涉及的显影盒的立体图。
图11是本发明实施例二涉及的显影盒的部分部件分解示意图。
图12是本发明实施例二涉及的显影盒中计数齿轮的立体图。
图13A和图13B是本发明实施例二涉及的显影盒中计数装置的拨动件的立体图。
图14是本发明实施例二涉及的显影盒中计数装置的活动件的立体图。
图15A是本发明实施例二涉及的显影盒端盖从外侧观察的立体图。
图15B是本发明实施例二涉及的显影盒端盖从内侧观察的立体图。
图16A是本发明实施例二涉及的显影盒中计数装置在开始计数时，从显影盒的侧面观察的侧视图。
图16B是本发明实施例二涉及的显影盒中计数装置在开始计数时，计数齿轮与端盖的相对位置示意图。
图16C是本发明实施例二涉及的显影盒中计数装置在开始计数时，沿显影盒竖向方向观察时的侧视图。
图17A是本发明实施例二涉及的显影盒中计数装置在计数完成时，计数装置的计数齿轮、驱动件和活动件的相对位置示意图。
图17B是本发明实施例二涉及的显影盒中计数装置在计数完成时，沿显影盒竖向方向观察时的计数齿轮、驱动件和活动件的相对位置示意图。
具体实施方式
下面结合以下附图对本发明的实施例进行描述，应当理解的是，本领域技术人员根据下文记载对本发明实施例所做的任何改动均应视为在本发明的保护范围内。
图1是本发明涉及的显影盒的立体图。
显影盒100可与未示出的鼓架结合形成处理盒，所述鼓架包括鼓架体以及可旋转地安装在鼓架体中的感光鼓，该显影盒100或处理盒均以可拆卸的方式被安装至设置有被计数部的激光打印机中。所述显影盒100沿y方向被安装，并具有在x方向延伸的长度以及在z方向延伸的高度，所述z方向为显影盒100被正常放置时，从显影盒100的底部指向顶部的方向，在此定义与x方向平行的方向为纵向，与y方向平行的方向为横向，与z方向平行的方向为竖向。
显影盒100包括容纳碳粉的壳体10、可旋转地安装在壳体10中的显影辊11、与显影辊11接触的出粉刀14和送粉辊15(如图11所示)、位于壳体纵向末端的驱动装置20和计数装置30以及与计数装置30同侧设置的端盖12，所述送粉辊15将碳粉向显影辊11输送，并由显影辊11向外供应，出粉刀14与显影辊11外表面抵接，用于调节显影辊11外表面的碳粉层厚度，计数装置30可与驱动装置20同侧设置，二者也可分别位于壳体10的两个纵向末端， 无论二者如何分布，计数装置30工作所需的驱动力均由驱动装置20供应，即驱动装置20从激光打印机等外部部件中接收驱动力后，显影辊11、送粉辊15和计数装置30均被驱动而工作。
{实施例一}
图2是本发明实施例一涉及的显影盒中部分部件的分解示意图；图3是本发明实施例一涉及的显影盒中支架的立体图；图4是本发明实施例一涉及的显影盒中支架的侧视图；图5是本发明实施例一涉及的显影盒中端盖的立体图。
驱动装置20包括驱动力接收部21、显影辊齿轮22、送粉辊齿轮23和中间齿轮24，显影辊齿轮22和送粉辊齿轮23分别位于显影辊11和送粉辊15的末端，驱动力接收部21同时与显影辊齿轮22、送粉辊齿轮23和中间齿轮24啮合，因而，当驱动力接收部21接收到驱动力时，驱动力接收部21绕旋转轴线L01旋转，显影辊齿轮22、送粉辊齿轮23和中间齿轮24开始旋转，相应的，显影辊11和送粉辊分别被显影辊齿轮22和送粉辊齿轮23驱动，计数装置30被中间齿轮24驱动。
支架13用于支撑驱动力接收部21、显影辊11和送粉辊，具体为，支架13的本体131上设置支撑柱132以及多个通孔，驱动力接收部21被支撑柱132支撑，显影辊11的辊轴和送粉辊的辊轴均穿过通孔，使得显影辊11和送粉辊被支撑，然后，显影辊齿轮22和送粉辊齿轮23分别安装至显影辊的辊轴和送粉辊的辊轴上；然而，支撑柱132以及用于支撑显影辊辊轴和送粉辊辊轴的通孔也可以分体设置，即支架13被分解为用于支撑显影辊辊轴、送粉辊辊轴和驱动力接收部21的多个部件。
如图3所示，支架13还设置有用于接收迫推力的被迫推部133，所述被迫推部133与本体131一体形成，因而，被迫推部133的强度得到保障。显影盒100被安装后，该被迫推部133用于接收迫推力，使得显影辊11与显影盒外部的感光鼓保持接触，此时，被迫推部133不再从壳体10向外延伸形成，从体积上看，支架13比壳体10的体积小得多，在壳体10的运输过程中，体积较小的支架13更容易得到保护，即使有颠簸，被迫推部133位于支架13上也比位于壳体10上更不容易被折断。
所述支架13位于壳体10和端盖12之间，当支架13被安装时，整体上看，支架13可被看作是从壳体10向外延伸形成，因而，被迫推部133在支架13上不必被设置的突出即可接收到迫推力，从而进一步确保了支架13的整体强度，同时，作为与本体131一体形成的被迫推部133也不会容易被折断。
驱动力接收部21可旋转地被支撑柱132支撑，一般的，支撑柱132为从本体131突出 的圆柱体，所述支撑柱132的外表面包括相邻设置的多个凹部132a和多个凸部132b，如图4所示，沿着旋转轴线L01的方向观察，多个凸部132b的最外侧位于同一个圆周面上，当驱动力接收部21被安装时，支撑柱132与驱动力接收部21的接触面积减小，二者之间的摩擦力得到降低。
回到图2所示，计数装置30包括驱动齿轮31和拨动件32，驱动齿轮31与中间齿轮24啮合，在中间齿轮24的驱动下，驱动齿轮31绕旋转轴线L02旋转，拨动件32绕不同于旋转轴线L02的旋转轴线L03旋转，即驱动齿轮31和拨动件32偏心布置。结合图2和图5可知，驱动齿轮31被安装在壳体10上，拨动件32被安装在端盖12上，计数装置30的整体结构被简化。
驱动齿轮31包括齿轮体311和设置在齿轮体311上的拨动突起312，所述齿轮体311用于接收中间齿轮24的驱动力，拨动突起312被设置成圆弧形，用于迫使拨动件32转动，使得拨动件32拨动激光打印机中的被计数部，根据显影盒100的型号、颜色等属性，拨动突起312的圆弧角度、个数等均可能不同，下文以其中一个拨动突起312与拨动件32的结合和脱离结合过程为例进行说明，沿驱动齿轮31的旋转方向，拨动突起312具有前端部312a、后端部312b和位于二者之间的中间部312c。
所述齿轮体311的圆周面上设置有齿部和缺齿部，拨动突起312与齿轮体311同心布置，并沿齿轮体311的圆周方向延伸，齿轮体311的齿部与中间齿轮24相对时，驱动齿轮31可以被中间齿轮24驱动旋转，当缺齿部与中间齿轮24相对时，驱动齿轮31不能被中间齿轮24驱动，此时，驱动齿轮31停止转动，相应的，拨动件32也停止工作。
所述拨动件32包括旋转部321、从旋转部321延伸的杆部322以及设置在杆部322的拨动部324和受力部323，旋转部321相对于与驱动齿轮31偏心，受力部323被拨动突起312拨动，拨动部324拨动被计数部。
如图5所示，端盖12中设置有穿孔121、设置在穿孔121中心的定位部122以及与定位部122偏心的卡接部123，拨动件32被固定在卡接部123，并从穿孔121暴露，定位部122对驱动齿轮31进行定位。
图6A和图6B是本发明实施例一涉及的计数装置开始计数时，驱动齿轮和计数装置各部件之间的位置关系示意图；图7A和图7B是本发明实施例一涉及的计数装置计数过程中，驱动齿轮和计数装置各部件之间的位置关系示意图；图8A和图8B是本发明实施例一涉及的计数装置计数完成后，驱动齿轮和计数装置各部件之间的位置关系示意图。
计数装置30位于计数的初始状态时，齿轮体311的齿部与中间齿轮24啮合，受力部323 位于与前端部312a相邻的位置，随着中间齿轮24沿d1方向转动，驱动齿轮31开始沿d2方向转动，拨动突起312随齿轮体311旋转，使得受力部323被保持在中间部312c，此时，拨动件32保持不动，拨动部324能够持续与被计数部接触；当拨动突起312随齿轮体311旋转至后端部312b与受力部323接触时，拨动突起312即将与受力部323脱离结合，但此时拨动件32仍保持不动；随着齿轮体31的继续旋转，拨动突起312与拨动件32脱离结合，在与拨动件32结合的弹性件的弹性作用力作用下，拨动件32沿与d2所示方向相反的方向转动，而使得拨动部324与被计数部脱离接触，同时，齿轮体311的缺齿部与中间齿轮24相对，虽然中间齿轮24继续旋转，但齿轮体311不再接收驱动力，驱动齿轮31和拨动件32均保持静止状态，计数装置30完成计数。
当拨动突起312设置为多个时，通过调整初始状态时，齿轮体311与中间齿轮24的啮合位置以及缺齿部的长度等参数，确保计数装置30在计数过程中，每个拨动突起312均能够与拨动件32结合和脱离结合，且计数装置30完成计数时，齿轮体311的缺齿部与中间齿轮24相对，在计数过程中，当受力部323与拨动突起312脱离结合时，在弹性件的弹性作用力作用下，拨动件32沿d2的反方向转动而与下一个拨动突起312结合，直至齿轮体311的缺齿部与中间齿轮24相对。
该计数装置30中的驱动齿轮31相对于拨动件32偏心布置，驱动齿轮31在转动过程中可使得拨动件32保持不动，并可根据计数装置30的计数需求设置拨动件32被保持不动的时长、次数等参数，驱动齿轮31上设置的圆弧面与拨动件32上设置的受力部323结合，可降低驱动齿轮31和拨动件32之间接触的精度要求，同时，驱动齿轮31和拨动件32分别被安装在壳体10和端盖12上，因而，计数装置30的结构可被简化，其组装难度也被降低。
图9是本发明实施例一涉及的显影盒沿与其纵向方向平行的方向观察时，显影辊、出粉刀和驱动力接收齿轮之间的相对位置示意图。
如图3所示，出粉刀14包括相互结合的刀架141和刀片142，其中，刀架141被固定安装在壳体10上，刀片与显影辊11的外表面抵接；驱动装置20包括驱动力输入件21、显影辊齿轮22、送粉辊齿轮23和至少一个中间齿轮24，驱动力输入件21包括驱动力接收部211以及与驱动力接收部211结合的第一驱动齿轮212和第二驱动齿轮213，所述驱动力接收部211、第一驱动齿轮212和第二驱动齿轮213的直径依次增大，驱动力接收部211从外部接收驱动力，第一驱动齿轮212与送粉辊齿轮23啮合，第二驱动齿轮213与显影辊齿轮22啮合，当驱动力输入件21接收到驱动力后，显影辊齿轮22、送粉辊齿轮23和至少一个中间齿轮24均被驱动，因而，显影辊11和送粉辊15开始旋转。
如上所述，显影盒100在工作时，驱动力接收部211需要从激光打印机中接收驱动力，并分别通过第一驱动齿轮212和第二驱动齿轮213驱动送粉辊齿轮23和显影辊齿轮22转动。出粉刀的刀架141包括相对弯折的第一部分141a和第二部分141b，优选的，第一部分141a与第二部分141b之间形成具有90°夹角的弯折部141c，刀片142被固定在第二部分141b上，当出粉刀14被固定在壳体10时，第一部分141a与第二部分141b相互限位，确保出粉刀14被稳定的安装在壳体10上。
所述驱动力输入件21通过支架13与壳体10结合，在驱动力接收部211从外部接收驱动力的过程中、第一驱动齿轮212与送粉辊齿轮23之间传递驱动力的过程中以及第二驱动齿轮213与显影辊齿轮22之间传递驱动力的过程中均会在两个相互结合的部件之间产生振动，尤其是驱动力接收部211接收到驱动力的一瞬间，整个驱动力输入件21会产生较大的振动，当该振动通过壳体10传递至出粉刀14和显影辊11时，可能导致出粉刀14与显影辊11之间的抵接状态发生改变。
为减小所述振动传递对出粉刀14和显影辊11之间相对位置的影响，如图9所示，当沿显影盒x方向观察时，至少驱动力接收部211不与出粉刀14重叠，在驱动力接收部211接收到驱动力的一瞬间，被传递至出粉刀14和显影辊11的振动减小，或者，至少驱动力接收部211不与弯折部141c和刀片142至少之一重叠，这样，即使有振动被传递至出粉刀14，振动也仅能影响到刀架第一部分141a，而不会影响到刀架第二部分141b以及安装在刀架第二部分141b上的刀片142。
如图9所示，沿显影盒的安装方向y，出粉刀14与显影辊11接触的部位位于驱动力接收部的前方，或者说，显影辊11和刀片142均位于驱动力接收部211的前方，或者说，显影辊11和刀片142均位于驱动力接收部211的圆周范围之外，沿竖直方向z，刀架第一部分141a位于驱动力接收部211的上方，在减小振动对出粉刀14和显影辊11之间相对位置影响的同时，还可在显影盒100沿安装方向的尺寸确定的情况下，减小显影辊11的外径尺寸，降低显影辊11的用料成本，本发明中，显影辊11的外径d可在12mm-19mm的范围内选择，优选为16mm，当沿着驱动力接收部211的旋转轴线观察时，显影辊11的中心点A与驱动力接收件21(驱动力接收部)的中心点B之间的距离被放大至17mm-19mm。
进一步的，当沿显影盒100的纵向方向观察时，所述第一驱动齿轮212与弯折部141c、刀架第二部分141b和刀片142中的至少一个不重叠，因而，第一驱动齿轮212与送粉辊齿轮23之间传递驱动力时产生的振动对刀片142的影响被降低。
{实施例二}图10是本发明实施例二涉及的显影盒的立体图；图11是本发明实施例二涉 及的显影盒的部分部件分解示意图。为便于理解，本实施例与上述实施例中相同的部件将采用相同的编号。
如图10所示，驱动装置20的一部分和/或计数装置30的一部分均被端盖12覆盖，驱动装置20中用于接收驱动力的驱动力输入件21从端盖12暴露，计数装置30的至少一部分也从端盖12暴露，具体的，沿y方向，计数装置30中用于接收复位力的部件从端盖12的后端暴露，便于操作人员对计数装置30进行复位，或者在显影盒100的安装或拆卸过程中，鼓架或激光打印机内的部件迫使计数装置30复位。
本实施例中，计数装置30包括计数齿轮31、拨动件32、活动件33和第一复位件34，计数齿轮31与驱动齿轮24啮合，当驱动齿轮24开始转动时，计数齿轮31被驱动，可实现的，计数齿轮31的驱动力还可以是驱动齿轮24外表面设置的橡胶层与计数齿轮31之间的摩擦产生，或驱动齿轮24和计数齿轮31均被替换成橡胶轮，因而，驱动齿轮24可被视为用于驱动计数齿轮31转动的驱动件之一，计数齿轮31可被视为被驱动件之一；拨动件32与计数齿轮31分体形成，且二者偏心设置，随着计数齿轮31的旋转，拨动件32被计数齿轮31间隔拨动，当拨动件32被拨动时，拨动件32与激光打印机中的被计数部相互作用，完成激光打印机对显影盒100的识别；活动件33的一部分与计数齿轮31同轴设置，在第一复位件34的迫推力作用下，活动件33具有远离驱动件24的趋势，或者说，活动件33具有与驱动件24脱离结合的趋势，计数完成后，计数齿轮31在活动件33的带动下与驱动件24脱离结合，当计数装置30需要复位时，通过对活动件33施加克服第一复位件34的迫推力，计数齿轮31在活动件33的带动下回到与驱动件24结合的位置，换句话说，本发明中的计数齿轮31可在活动件33的带动下在与驱动件24结合的位置以及与驱动件24脱离结合的位置之间移动。
所述第一复位件34产生迫推力的方式可以利用弹性件或磁性件等，优选的，第一复位件34为扭簧，该扭簧的一端与壳体10抵接，另一端与活动件33抵接；如图11所示，为确保拨动件32能够稳定的从计数齿轮31接收拨动力，所述计数装置30还包括与拨动件32结合的第二复位件35，所述第二复位件35用于迫使拨动件32回到可接收计数齿轮31所施加的拨动力的位置，同样的，第二复位件35也可以是弹性件或磁性件等，优选的，第二复位件35为拉簧，该拉簧的一端与拨动件32结合，另一端与端盖12结合。
图12是本发明实施例二涉及的显影盒中计数齿轮的立体图；图13A和图13B是本发明实施例二涉及的显影盒中计数装置的拨动件的立体图；图14是本发明实施例二涉及的显影盒中计数装置的活动件的立体图；图15A是本发明实施例二涉及的显影盒端盖从外侧观察的立 体图；图15B是本发明实施例二涉及的显影盒端盖从内侧观察的立体图。
计数齿轮31可绕旋转轴线L1转动，包括设置在外圆周的齿牙312、设置在一个表面311上的至少一个拨动突起313、以及可随计数齿轮转动的解锁件314，齿牙312与驱动件24结合以接收驱动力，拨动突起313沿计数齿轮31的圆周方向设置，所述拨动突起313的数量和形状可根据激光打印机所需识别的显影盒信息量确定，例如，激光打印机可根据拨动突起313的数量确定显影盒的寿命信息，或者，激光打印机还可根据拨动突起313在计数齿轮31圆周方向的长度确定显影盒的型号等信息，当拨动突起313设置为多个时，多个拨动突起313间隔排布；所述解锁件314用于解除活动件33的锁定，将在下文中详细描述。
如图12所示，计数齿轮31还包括设置在其中的结合部315，该结合部315用于与活动件33的一部分结合，使得计数装置30在计数完成后，计数齿轮31能够随着活动件33的移动而移动。具体的，结合部315为与旋转轴线L1同轴设置并从表面311突出的轴孔，相应的，活动件33上设置有与轴孔配合的突柱332(如图14所示)，或者，突柱332被设置在计数齿轮31上，轴孔被设置在活动件33上；可变形的，所述轴孔或突柱332也可不必与旋转轴线L1同轴设置，而是在计数齿轮31上与旋转轴线L1平行设置或相对倾斜设置，只要使得计数齿轮31能够随着活动件33的移动而移动即可。
拨动件32与计数齿轮31偏心布置，当计数齿轮31转动时，拨动突起313拨动所述拨动件32转动，进而使得拨动件32与被计数部相互作用；相比于现有拨动件32与计数齿轮31同心布置的结构，本发明中的拨动件32不仅与计数齿轮31分体设置，二者还相对偏心，因而，显影盒生产厂商可根据激光打印机中被计数部的位置不同，改变拨动件32与计数齿轮31的相对位置即可，而不必再重新设计计数齿轮31，有利于降低显影盒生产厂商的生产成本。
所述拨动件32包括可绕旋转轴线L2转动的基部321、从基部321向外突出的中间部322、设置在中间部322上的拨动块323和受力部324，受力部324与计数齿轮31上的拨动突起313抵接，当计数齿轮31转动时，拨动突起313迫推受力部324而导致拨动件32绕旋转轴线L2转动，同时，拨动块323与被计数部相互作用，沿旋转轴线L2，拨动块323和受力部324分别位于中间部322的两侧，在拨动件32的转动期间，拨动块323与被计数部之间的相互作用以及受力部324与拨动突起313之间的相互作用可不受影响，显影盒的复杂程度可以降低。
活动件33包括主体331以及设置在主体331上的转动部333和被结合部(突柱)332，在第一复位件34的迫推作用下或在克服第一复位件34的迫推力时，活动件33可通过转动部333绕旋转轴线L3转动，如上所述，优选的，突柱332与计数齿轮31同轴设置，即旋转轴线L1穿过突柱332，此时，旋转轴线L1与旋转轴线L3相互平行，活动件33在与旋转轴线 L1垂直的平面内移动。如图14所示，活动件33还包括设置在主体331上的定位部334、被锁定部336和被迫推部337，优选的，定位部334、被锁定部336和被迫推部337均与主体331一体形成，第一复位件34的一端被定位部334接纳，被锁定部336用于与外部的锁定件结合，防止活动件33在第一复位件34的迫推下绕旋转轴线L3转动，使得突柱332与计数齿轮31的结合部315保持相对静止，此时，计数齿轮31与驱动件24保持结合；当计数装置30需要复位时，被迫推部337从外部接收作用力，克服第一复位件34向活动件33施加的迫推力，使得活动件33绕旋转轴线L3转动，进而通过突柱332带动计数齿轮31回到与驱动件24结合的位置。
可实现的，被锁定部336、被迫推部337均与主体331分体形成，此时，被锁定部336与主体331之间以及被迫推部337与主体331之间均通过连接部件连接，且当被锁定部336被外部的锁定件锁定时，主体331也被锁定，当外部作用力施加至被迫推部337时，主体331也可绕旋转轴线L3转动。
所述端盖12包括端盖体120、设置在端盖体120上的第一通孔12a、第二通孔12b和第三通孔12c，所述第一通孔12a大体沿y方向开口，并面向显影盒安装方向的后端，其具体形状不做限定，即第一通孔12a可为圆形或多边形等形状，第二通孔12b和第三通孔12c沿x方向延伸，计数装置30通过第二通孔12b暴露，驱动力接收部211通过第三通孔12c暴露；如图15A和图15B所示，端盖12还包括与第二通孔12b相对设置的盖12d以及从盖12d或端盖体120向壳体方向突出的多个定位部122/127/128/129，计数齿轮31与定位柱122相对，但定位部127不会限制计数齿轮31的移动，活动件33被定位柱127支撑定位，拨动件32被定位柱129支撑定位，第二复位件35的一端与定位柱128连接。
进一步的，端盖12还包括与第二通孔12b相邻设置的锁定件126，也就是说，本发明中的锁定件126设置在端盖12上，当然，锁定件126还可以被设置在壳体10上，下文中以锁定件126设置在端盖12为例进行描述。
优选的，锁定件126形成为端盖体120的一部分，且锁定件126可相对于端盖体120变形，如图15B所示，锁定件126面向壳体10的一侧设置有解锁突起1261和限位块1262，在锁定突起1261与限位块1262之间形成有锁定部1263，所述锁定部1263形成为锁定凹槽，当被锁定部336进入锁定凹槽1263时，活动件33被锁定而不能被第一复位件34迫推移动。
图16A是本发明实施例二涉及的显影盒中计数装置在开始计数时，从显影盒的侧面观察的侧视图；图16B是本发明实施例二涉及的显影盒中计数装置在开始计数时，计数齿轮与端盖的相对位置示意图；图16C是本发明实施例二涉及的显影盒中计数装置在开始计数时，沿 显影盒竖向方向观察时的侧视图。
如图11所示，显影盒100还包括设置在壳体10的纵向末端面10a上的限位板10b，在计数完成后，所述限位板10b用于对计数齿轮31的移动范围进行限制；如图12所示，解锁件314从计数齿轮表面311突出形成，沿计数齿轮31的旋转方向r2，解锁件314具有前末端314a和后末端314b，且后末端314b比前末端314a相对于表面311突出的更远，因而，在前末端314a与后末端314b之间形成斜面314c。
为更清楚显示计数装置30各部件的状态，图16A中隐藏了端盖12。如图所示，当显影盒100随着鼓架被安装至激光打印机时，计数齿轮31既可以与驱动件24处于结合状态，二者也可以处于相互分离的不结合状态，当计数齿轮31与驱动件24处于相互分离的不结合状态时，所述被迫推部337可接收来自操作人员或鼓架或激光打印机的部件(例如激光打印机门盖、内壁等)所施加的作用力，进而通过活动件33带动计数齿轮31移动，使得计数齿轮31到达与驱动件24结合的位置，此时，如图16B所示，解锁件314的后末端314b与解锁突起1261抵接，计数齿轮31可能的反向转动被制止，且被锁定部336进入锁定凹槽1263，即使第一复位件34向活动件33施加有迫推力，所述活动件33也不会移动，相应的，计数齿轮31也不会移动。
所述驱动力输入件21接收到驱动力后开始沿r1(如图16A)所示方向转动，驱动力通过驱动件24被传递至计数齿轮31，计数齿轮31开始绕旋转轴线L1沿r2所示方向转动，当拨动突起313拨动受力部324时，拨动件32开始绕旋转轴线L2沿r3所示方向转动，在一个拨动突起313拨动受力部324的过程中，第二复位件35发生变形，拨动块323与激光打印机中的被计数部相互作用，直至拨动突起313与受力部324脱离结合，接着在第二复位件35的复位力作用下，拨动件32绕旋转轴线L2沿与r3所示方向相反的方向转动，使得受力部324与下一个拨动突起313结合，并重复上述过程。
图17A是本发明实施例二涉及的显影盒中计数装置在计数完成时，计数装置的计数齿轮、驱动件和活动件的相对位置示意图；图17B是本发明实施例二涉及的显影盒中计数装置在计数完成时，沿显影盒竖向方向观察时的计数齿轮、驱动件和活动件的相对位置示意图。
在计数装置30即将完成计数时，解锁件的前末端314a到达与解锁突起1261相邻的位置，所述解锁突起1261具有与斜面314c对应的斜面，所述斜面314c与解锁突起1261的斜面逐渐抵接，随着计数齿轮31的继续旋转，解锁件314通过迫推解锁突起1261使得锁定件126发生变形，具体为，锁定件126向着远离壳体10的方向变形，被锁定部336从锁定凹槽1263脱离，第一复位件34释放迫推力，活动件33开始绕旋转轴线L3沿r4所示方向转动； 同时，在结合部315和被结合部332的作用下，计数齿轮31被活动件33带动一起绕旋转轴线L3沿r4所示方向转动，如图17B所示，计数齿轮31与驱动件24脱离结合，二者之间形成间隙a，所述驱动件24的驱动力不能被传递至计数齿轮31，此时，计数齿轮31保持静止，所述被迫推部337运动至第一通孔12a的外部，或被迫推部337通过第一通孔12a暴露。
当计数装置30需要被复位时，如上所述，通过第一通孔12a，所述被迫推部337通过被操作人员或鼓架或激光打印机内的部件迫推，以克服第一复位件34对活动件33的迫推力，使得活动件33绕旋转轴线L3沿与r4所示方向相反的方向转动，同时，通过结合部315与被结合部332的作用，计数齿轮31被活动件33带动也绕旋转轴线L3沿与r4所示方向相反的方向转动，如图16C所示，计数齿轮31回到与驱动件24结合的位置。
本发明涉及的计数装置30在需要复位时，不需要拆开端盖12，只需要由操作人员或鼓架或激光打印机内的部件向活动件33的被迫推部337施加作用力，克服第一复位件34的迫推力，迫使活动件33带动计数齿轮31向着靠近驱动件24转动即可，该操作方式更快捷。

Claims (19)

  1. 显影盒，包括容纳碳粉的壳体、可旋转地安装在壳体中的显影辊、与显影辊接触的出粉刀以及位于壳体纵向末端的驱动装置，所述驱动装置包括用于从显影盒外部接收驱动力的驱动力接收部，并驱动显影辊转动；出粉刀与显影辊表面接触，用于调节显影辊表面的碳粉层厚度；出粉刀包括相互结合的刀架和刀片，刀架被固定安装在壳体上，刀片与显影辊外表面抵接；其特征在于，当沿着显影盒的纵向方向观察时，驱动力接收部不与刀片重叠。
  2. 根据权利要求1所述的显影盒，其特征在于，刀架包括相对弯折的第一部分和第二部分，所述第一部分和第二部分之间形成弯折部，刀片被固定在第二部分上；当沿着显影盒的纵向方向观察时，驱动力接收部不与弯折部重叠。
  3. 根据权利要求1所述的显影盒，其特征在于，显影盒还包括可旋转地安装在壳体中的送粉辊以及位于送粉辊末端的送粉辊齿轮，所述送粉辊用于向显影辊输送碳粉；
    驱动装置还包括与驱动力接收部结合的第一驱动齿轮，所述第一驱动齿轮与送粉辊齿轮啮合；
    刀架包括相对弯折的第一部分和第二部分，刀片固定安装在第二部分上，第一部分固定安装在壳体上，且第一部分和第二部分之间形成弯折部；
    当沿着显影盒的纵向方向观察时，第一驱动齿轮与弯折部、刀架第二部分和刀片中的至少一个不重叠。
  4. 根据权利要求1所述的显影盒，其特征在于，显影辊的直径范围为12mm-19mm。
  5. 根据权利要求4所述的显影盒，其特征在于，显影辊的直径值为16mm。
  6. 根据权利要求1所述的显影盒，其特征在于，当沿着驱动力接收部的旋转轴线观察时，显影辊的中心点与驱动力接收部的中心点之间的距离为17mm-19mm。
  7. 如权利要求1所述的显影盒，其特征在于，沿显影盒的安装方向，出粉刀与显影辊接触的部位以及显影辊均位于驱动力接收部的前方。
  8. 如权利要求1所述的显影盒，其特征在于，显影辊和刀片均位于驱动力接收部的圆周范围之外。
  9. 根据权利要求1所述的显影盒，其特征在于，刀架包括相对弯折的第一部分和第二部分，刀片固定安装在第二部分上，并与显影辊接触，第一部分固定安装在壳体上，沿显影盒的竖向方向，第一部分位于驱动力接收部的上方。
  10. 根据权利要求1-9中任意一项权利要求所述的显影盒，其特征在于，显影盒还包括位于壳体纵向末端的计数装置，所述计数装置包括被驱动件和拨动件，被驱动件被驱动力接收部驱动，使得拨动件与显影盒外部的被计数部相互作用；其中，拨动件相对于被驱动件偏心。
  11. 根据权利要求10所述的显影盒，其特征在于，显影盒还包括用于支撑动力接收部的支架， 支架设置有用于接收迫推力的被迫推部，在迫推力的作用下，显影辊与外部的感光鼓保持接触。
  12. 根据权利要求10所述的显影盒，其特征在于，显影盒还包括接收驱动力接收部的驱动力的驱动件，计数装置还包括活动件，在活动件的带动下，被驱动件可在与驱动件结合的位置以及与驱动件脱离结合的位置之间移动。
  13. 根据权利要求12所述的显影盒，其特征在于，被驱动件设置有被结合部，活动件设置有结合部，所述结合部与被结合部同轴设置。
  14. 根据权利要求13所述的显影盒，其特征在于，活动件在与被驱动件的旋转轴线垂直的平面内移动。
  15. 根据权利要求14所述的显影盒，其特征在于，活动件通过绕与被驱动件旋转轴线不同的旋转轴线转动，使得被驱动件与驱动件脱离结合。
  16. 根据权利要求12所述的显影盒，其特征在于，显影盒还包括覆盖计数装置一部分的端盖，拨动件和活动件分别从端盖的不同位置暴露。
  17. 根据权利要求15所述的显影盒，其特征在于，计数装置还包括与活动件抵接的第一复位件，在第一复位件的迫推力作用下，活动件具有远离驱动件的趋势。
  18. 根据权利要求17所述的显影盒，其特征在于，计数装置还包括与拨动件结合的第二复位件，所述第二复位件用于迫使拨动件回到可接收被驱动件所施加的拨动力的位置。
  19. 根据权利要求12所述的显影盒，其特征在于，显影盒还包括覆盖计数装置一部分的端盖，被驱动件上设置有解锁件，端盖上设置有锁定件，在计数装置计数时，活动件被锁定件锁定，在计数装置完成计数时，解锁件解除锁定件的锁定，活动件使得被驱动件与驱动件脱离结合。
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